Car-brake.



No. 722,266. PATENTED MAR. 10, 1903.

F. THEILENGERDBS. GAR BRAKE. APPLIUATION FILED JUNE 19, 1902.

No MODEL. 4 SHEETS-sumar z.

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F. THEILE'NGBRDES.

GAR BRAKE. Arrmoulon Hmm JUNE 1a, 1902. no MODEL. *I HHH 4 sums-SHEET 3.

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'I'. THEILENGERDES.

GAR. BRAKE. APPLICATION FILED JUNE 19, 1902.

PATENTBD MAR.10.1903

No MODEL. 4 SHEETS-SHEET 4.

lUNiornn Sirnrns PATENT FREDERICK Tl-IEILENGERDES, OF MEMPHIS, TENNESSEE.

CAR-BRAK E.

SPECIFICATION forming part of Letters Patent No. 722,266, dated March 10, 1903.

Application filed June 19. 1902. Serial No. 112,382. (No model.)

To @ZZ whom, t may concern:

Be it known that I, FREDERICK THEILEN- GERDES, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Gar-Brakes; and l do hereby declare the following to be a full,clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to brakes operated by a friction-clutch upon the axle, transmitting to the brake the power tending to rotate the wheels; and its leading objects are to simplify construction, to exclude dust and oil from the friction-surfaces, while supplying oil automatically where it is needed, to provide means for readily compensating wear and for removing and replacing parts, to provide for instantly applying all needed power with only slight movement of few parts, and to secure all these advantages in an extremely compact mechanism adapted to be mounted upon the axle alongside the usual motor of any ordinary car.

1n the accompanying drawings, Figure 1 is a perspective View showing my devices in position on a car-axle between the place of the motor and one of the wheels. Fig. 2 is a longitudinal section, with reference to the axle, through certain friction -disks and a sleeve which fits upon the axle. Fig. 3 shows a certain Wear-compensating device looking from the outer end of the axle. Fig. a is a view from the same point, showing a brakechain drum, the friction-clutch, and certain clutch-actuating devices. Figs. 5 and 6 show the two parts of the device of Fig. 3, the parts being separated without angular displacement and seen in the direction of the arrow of Fig. 3. Fig. 7 is a view showing a detached member of the clutch-actuating device. Fig. 8 shows the saine member looking from the right in Fig. 7. Fig. 9 is a side View of a forked lever which coacts with the member shown in Figs. 7 and 8. Fig. 10 shows the same forked lever as seen from the left in Fig. 9. Fig. 11 is a cam-faced member which coacts witha cam-face upon the lever of Figs. 9 and 10. Fig. 12 shows a shaft and its arm, parts which are seen also in Figs. Il and 15.

Fig. 18 is a plan view of an oil-reservoir member seen also in the lower part of' Fig. 4. Fig. 14 is a face view of a certain plate interposed between the lower end of the lever of Fig. 9 and the flange of Fig. 2. Fig. l5 is an edge View of the part seen in Fig. 14. Fig. 16 is a side View of the assembled clutch-actuating parts, the point of viewbeing the same as in Fig. 2.

In the figures, A represents a car axle and B a wheel thereon. Upon the axle at some distance from the wheel is xed a frictiondisk C, Figs. 1 and 2, having at some distance from the axle a plane annular face C, projecting laterally beyond the parts which support it to coact with a corresponding sunken face D of a disk D, which transmits rotary motion to a loose sleeve E, mounted upon the axle and serving as a drum upon which Winds a brake-chain F, connected in any suitable way to an ordinary brake-beam, (not shown,) either running directly to the beam or having its course changed in well-known ways by suitable pulleys or the like, in case intervening parts on the particular car make this desirable. The disk D is prevented from rotating upon the sleeve by an integral lug E' upon the sleeve fitting a suitable recess in the disk. The drum is provided with an integral annular :flange G at a short distanco from the disk, and upon the intermediate portion H of the sleeve are mounted parts to react against the flange and push the disk forcibly against its companion C. The reaction against the iange tends to slide the sleeve bodily toward the car-wheel B, and this tendency is resisted by a collar 1 of adjustable thickness, which, with a brass wearing-ring J, normally fills the entire space between the end of the sleeve and the wheelhub. The collar consists of two rings 112, each divided diametric'ally and having its halves secured together by bolts I3. The two rings have upon their adjacent or meeting sides inclined or cam faces 1415, which force the rings in opposite. directions when either is forcibly rotated with respect to the other. Such rotation is secured by means of a bent bolt 16, pivotally secured upon the periphery of one ring and passing through a broad perforation in a lug 17 upon the other ring and bearing upon its threadedend portion a nut 18, acting against the lug, and thus com- IOO pelling such relative rotation of the rings as will force them apart, or, in other words, increase the total thickness of the collar, and so compensate any wear that may occur between the disks or in other places where wear would allow endwise displacement of the sleeve. When proper adjustment has been secured, the rings are locked together by screwing up a second nut 19, which acts against the opposite face of the lug 17.

Upon the part l-I of the sleeve is placed a saddle K, Figs. l, 4, 7, 8, and 15, which is held against rotation by an arm K', secured in any suitable Way to any xed portion of the truck and which is provided with an upwardly-extending arm K2, having at its upper end a perforation One face of this saddle normally rests against the plane end face of the hub of the disk D, while across the opposite face extends a horizontal recess K4, and in this recess rests the fulcrum-rib L of a forked lever L', Figs. 9, 10, 16, whose upper end has both a perforation L2 in position to register with the perforation K5 and a cam-face L3 upon the side opposite the rib. Through these two perforations passes loosely a non-cylindrical shaft M, having at one end a rigid arm M', to which a clutchactuating rod may be attached, and at the opposite end a threaded portion. The shaft being in place in the perforations, a sleeve M2 is placed upon its free end and retained by a nut M3. This sleeve fits the non-circular shaft and has upon one side cam-faces fitting those upon the upper end of the lever L. Between the lower end of the lever and the flange G a U -shaped piece N is passed upward from below and held in place by an oilreservoir O, which is bolted to the lowerside of the saddle and is of such form that with the saddle it completely encircles this portion of the sleeve. It is cast hollow in order that it may contain oil and is provided with a central opening R, Fig. 13, in which is placed an oil-raising wick R. (Shown in dotted lines in Fig. 4.) Now if the arm M' be forcibly drawn to the right, Fig. 4L, the non-circular shaft and its cam-faced sleeve M2are rotated and the upper end of the lever is forced in a direction away from the free end of the noncircular shaft, while its lower end is prevented from moving in a contrary direction by the flange upon the sleeve E, and consequently the fulcrum-rib forces the central portion of the saddle against the clutch-disk D and presses the latter with great force against its companion C, which always rotates with the axle. Friction between the disks instantly compels the disk D, and with it the drumsleeve, to rotate, whereby the chain is wound upon the sleeve and the brake is forced against the Wheel lin the usual way. When the arm or lever M' is restored to its normal position by a spring P, coiled about a rod P', pivotally attached to the arm M', the spring reacts against a lug P2 upon the saddle. The disks are so formed that oil from the bearings will not readily reach their contact-surfaces, between which an annular disk of leather is preferably placed. The sleeve itself is provided with an annular recess Q for oil and with grooves Q', extending from the recess along the shaft and containing wicks or the like to secure a gradual distribution of -the oil. The parts which need lubrication and no others are thus automatically supplied with oil from the reservoirs, which are of course replenished from time to time as occasion may require.

It is to be observed that the whole device occupies but a few inches of space on the axle, and hence that it may be placed alongside the motor on any ordinary car without interfering with any other devices whatever or materially affecting access to any other devices. Still further, the devices themselves are where they can be readily reached for removal, replacement, or adjustment. It may also be noted that in forcing the sliding disk against the other thisdisk alone is moved, the heavy drum-sleeve and parts between the forked lever and the wheel retaining their places, and the peculiar disk-moving devices apply pressure to the disk both above and below the axial line, since the forked lever acts as a lever of the second class in pressing its rib against the saddle, while the latter itself acts as a lever of the rst class, using that rib as a fulcrum and pressing the lower part of the disk toward the disk upon the axle.

What I claim isl. The combination with a car-axle, of an annular friction-clutch disk fixed to the axle, a drum-sleeve revolubly mounted upon the axle alongside said disk, a second coacting disk mounted to slide, without relative rotation, upon said sleeve, means for forcing the second disk along the sleeve and against the first disk, and a brake-operating chain arranged to wind upon said sleeve as the latter rotates.

2. The combination with a caraxle, its wheels, and a brake-applying device to be actuated from the axle, of a friction-clutch disk fixed upon the axle at some distance from one of the wheels, a drum-sleeve loosely mounted upon the axle alongside the wheel, a second coacting clutch-disk to slide without relative rotation upon the sleeve toward and away from its companion, devices arranged to react upon the sleeve and force the second disk against the first, and means whereby the rotation of the sleeve actuates the brake-applying device.

3. The combination with a'car-axle and one of its wheels, of a drum-sleeve loosely mounted upon the axle in proximity to the wheel, a friction-disk fixed to the axle near that end of the sleeve most distant from the wheel, a coacting disk mounted to slide, without rotation, upon said sleeve means for forcing the second disk against the Iirst, and an adjusting device interposed between the wheel and the adjacent end of the sleeve.

IIO

4. The combination with a car-axle and one of its wheels, of a drum-sleeve loosely mounted upon the axle alongside said Wheel, aclutchdisk xed to the axle near the end of the sleeve opposite the wheel, a second coacting disk mounted to slide Without relative rotation upon the sleeve, means for at will forcing the second disk against the first, two rings mounted upon the axle between the wheel and the adjacent end of the sleeve and provided with cam-faces adapted to force the rings in opposite directions when they are relatively ro- 'rated in the proper direction, and means for at will adjusting the rings by such rotation.

5. The combination with a car-axle, of a drum-sleeve revolubly mounted thereon and provided with a projection or flange, a friction-disk mounted to slide without relative rotation upon the sleeve, a coacting disk fixed to the axle beyond the end of the sleeve, the saddle member mounted upon the sleeve alongside said sliding disk and having the upwardly-projecting arm, the forked lever having the central fulcrum projection and mounted upon the sleeve between the saddle member and said flange, and means for forcibly lessening the distance between the upper ends of said arm and lever.

6. The combination with a car-axle and a friction-disk fixed thereto, of a drum-sleeve revolubly mounted upon the axle alongside said disk, means for preventing the sleeve from moving from the disk, a second coacting disk mounted upon the sleeve to slide Without relative rotation thereon, a saddle member resting upon the sleeve alongside said sliding disk and having an outwardlyextending arm, an oil-reservoir detachably secured to the saddle member below and holding it upon the sleeve, a forked lever resting upon the sleeve and pressing centrallyagainst the saddle member While reacting at a lower point against the sleeve, and means for drawing the outer end of the .lever and said arm forcibly toward each other.

7. The combination with a car-axle and one of its Wheels, of a drum-sleeve loosely mounted upon the axle alongside the Wheel, a Wearcompensating device interposed between the wheel-hub and said sleeve, a friction-disk fixed to the axle near the opposite end of the sleeve, a brake-chain winding upon the sleeve,

a second coacting disk mounted to slide without relative rotation upon the sleeve, a lever arranged to react against the sleeve and force the second disk against the first, and a leverrotated cam for actuating said lever.

In testimony whereof I affix my signature in presence of two Witnesses.

FREDERICK 'lllllllillllGllRDllSl Witnesses:

EDWIN S. CLAnKsoN, WALLACE GREENE. 

